Carbureter.



GRBUPJETBR.

APPLIUATION FILED nov. 24, 1908. RSHSWED JUN; s, 1911.

w J i m ffm@ 9331i @mi WMM/Lewes srarns rati-inner oosten,

TOALFRED A. WHETMAN, F YELK, Y,

CARBURE'EER.

fi ,eens-es.

Application tiled November 24, 1968, Serial o. 464,246. Renewed June 2911. Serial` No. 532,0

To all when?, fn, (1.1/ fo/cern fleit known that l. llnnnitn locit, a citis 1 y zen ot the United Mates, residing at Vv esterly, county oii'lllashington, Rhodelshtiid,

, the purpose of the same heilig to provide an improved construction .i'herebyY air at atmosphericI pressure may be admittedthrough the carburetor, or air 'under a pressure heavier than atmosphere may be forced through said carburetor, the fuel supply heing taken up by the air in either instance in a proper proportion to mingle therewith in such marmer as to produce a uniform mixture.

lthis invention has particular value when used in connection with an engine such as set forth in my former Patent No. 831,044, of September 1906, in which the starting ot the engine is etleeted by forcing a charge of gas under pressure into the Cylinder, for the purpose ot advancing the piston on one power stroke, a portion of said charge being relieved on the return stroke, the remaining portion being re-i'iompressed and tired on the next'advamze stroke, the burned gas being expelled by the 'following return stroke of the piston, and so on. 1 My invention aims at simplicity, cli'eeti veness, durability, certainty and uniformity of action under` these varying conditions.

In the accompanying drawings Figure l is in the main a sectional View of my carburetor, (.'ertain'parts being shown in elevation. Fie'. 2 is a sectional view of the fuel reservoir or float-can so-called. Fig. 3 is a sectional 'View ot said float-can, taken at right angles to the section of Fig. 2, and also showing in section a portion of the main .body of the carburetor.

Speceaton or letters Patent.

air ports At, which may be closed by back latente/d Set, 3, T312..

pressure through the medium of a secondary,

check valve 6.

7 is the fuel' nozzle located in the gooseneclt and controlled by a needle valve 8. The needle valve is adjnstabiy mounted in a suitable sliding sleeve 8a so that when adjusted a proper epenii'tg is provided at the outlet end oit the nozzle i for starting. A spring 9 tends to liit the sleeve portion of the needle valvev 8 to open said ynozzle still Wider. i v

10 is a lever engaging at one end with the needle valve sleeve and at the other end with a collar 1l on the stem of the check valve et. i Assuming the springs S) and are properly proportioned and adjusted, and the motor is being started or is running slowly, drawing, for example, a predetermined amount ot.' air through the goose-neck past the jet, the valve et will assume a predetermined position ett'ected by adjustment, such, for example, as indicated in Fig. l. The spring 5, being stronger than spring 9, serves to not only keep the valve ft against its seat, but also (through lever to hold the needle valve S at said predetermined adjustment. As soon as an increased demand for mixture is made, this is supplied by suction around the valve 4, which then opens sutiiciently to supplement the air through the ports 4, As the choc; valve lt is unseated and opens, the spring` il opens the valve S to such an extentas is permitted by lever 1t), which latter is permitted to rock back by the opening of valve l.

Fuel is maintained in the nozyle T at a uniform level by means of a constant level in fuel tank or-tioat-can 12, to which tank fuel is supplied through pipe 13 controlled by valve .l-t operated by the float l5 through the medium of a hinge lever lti. The bearing of the hinged lever 1G is mounted upon an adjustable stem 17, whereby the height of the fulcrum thereof may be varied and the normal level of the fuel in the tank l2 ctnrespondingly varied. l

18 is a spring-pressed plunger normally retracted and so a'r 'anged relatively to the tloat that by pressing down upon said plunger the float may be depressed,- the valve ,it opened, and the earbureter Hooded to anydesired extent.

'lhe neat-can l2 is normally open to at;

titl

l, eli mi" The circula vul ming El:

l5 i 1 A lining :L mi n muy be reguhiterl e u''ug @peru es tu i" v"vluan the 'vulve F23 in nl; wlll he fouled in @pei ille :intimi i. e0.z`:.i} n"=1m5sed :wir Iwill .enge @il inte he gul:

um: ile 7, lzzrlring in A requirements demini ff unil, puel;A 6,'

uns leerling fiuni il, ,man lill uit@ e with fuel, tlm

z W gru'viiujr ut 'the l `l reef izo Sturt i; engin@ compr ing 1; u vulve 23. if'uiw 25, nu :is to 5i the 11u01 nozzle, us lirsn f mixture to be delivered ithrmigh pipe l mi the motora The relutively high preneur@ nl the mnlpressed nir `in `the giunse-neuk series tu uutonmticully L the Cheek vali* al und (i (should eil bolli nl them einen/l ihereby pleveniii'ig; escupe if mimpi f eil air t0 utnmsplwie. "1f o prineut-iimm` fing wn the level of fuel in lille num/.ln luy il" p1 esence of corrngruused ulm this .mme ure is muiniuined upon thi? fuel. in the nut-cnn by reason nif llue bypass .Ae 'Mm ras the engine han started und guinml lNhen happens, au.' will. he :li'uwn in through il muil. puei, vulve 1e denim lf the engine in il for ail' muy he i we 4:, in Whirl: e ribed3 the umile mili/'e "l cn n relative respomiimy runnin i ne il* i in uupply the des; amrnxnl al llruliu' :Hummm inlie mLipm'inn uf' nir mul n il 'Tim elif rilieireiit mmnentuni, the ,vulve 23 muy im nu 'l5 ne: fullowef mls/u 'l, vri i Mlm, mi int-vw lufhl il npi'n gli' n lo il wml L li'lu n www fall um il prin: l u ljzuvul linin Haw wml" lo Hin n l llw msnen i f ur. will un; of the vni wie l'- i .All inl); ummm prehauw Mun", luvrl mi liu; incl li, liu iluulfcun man here iff; upm@ lille full in the nnzzlv. '.ifilie: .'llilifvzlrvum muy liu mrlml und udjustel li); me of: il :Hinflug :lll .'uulrilling the 'relie 'mi :5u thzit wlnilefvui ireseure il requins le typen @heck wilife Q51 u eurrespnndlngly guenter :minuut nl premura will he imparted m tlm fuel wihin ille 'limit-Cun, thus guurarr i g u ce iiuty ui', 'i'uul feed at, the nnzzh- `raving lim hurting n elution. When the me luis :iimimffrl su 'cient momentum, au lie; nro. imiliw teil, und the vulve 23, is closed. tlm :mill ehem; valve 25 is utormiticll) @leased tn shui. mi the passage throu h the fuese-neuk fruni the byfpaes 27, fol owing u the prieseuree upon the fuel in bul/h ilmit 'amber und the fuel nozzle will fxiuntinlly equalize and operate inthe huupteil herein in describe only one nrin fil"- my invenivinn, uml Lhut I um aware thin vuriouu nhanges und rnfklifiuutinns may he rnml'ily made as td details and iurangemenl4 Si pur'tsf.

W'luit I claim is:

L lin u curllmretcr. t durft, a fuel supply nmizle projecting into the mileage of said duela two separate und independent air inlets entering said duct at one eide of Snitl fuel nmzule, a, check valve for euch inlet, u fuelreservoir, means for maintaining fuel therein als u substantially constant leyel, a 4fuel, pipe connecting said fuel reservoir with rsi-iid fuel. nozzle, u by-peseeonnecting the interior uf said fuel reservoir with the in Ixerior-of one of sind inlets back of the check VAlve therein, an uil vent in saidfuel resetund e` back pressure valve therefor to uuid reservoir to the entrance of nir u hun prfsfurn within the sume ie in excesl'd utili,

freier, a duct, a valved fuel an air inlet for :mid duct zu, f1 ipheru n :mthm inde- L yziiifl dim upf-,ning fo u u urmuuily inntrollullli r1 nimuwiiv# wutnnmlfiilly w nl when :wvl

ra were :uw

"Hur

lill

Y when the said miv@ in thee from the atmosphn mui ummm :1 Chack valve heri'in, l'esiliceci aix' ducts tlm-Hugh mid check mi ve, means connecting said chmfkrvuhfo wih said fuel valve whm'eby 'rile (ringing nmvoixwnt of i sni check miw wii izipaxt a, corresponding n niiet to sind duct i said compressed air inlet between said valves `to the fuel reservoir, and means to close the atmospheric inlet when the compressed air valve is opened whereby pressure upon the fuel in the fuel reservoir will be inexcess ot' the pressure Withinfthe air passage of the--earbureter in the vicinity of the fuel nozzle while compressed air is being passed therethrough.

9. 1n a carbureter having an air passage, an atmosphericl inlet, a 'compressed air inlet, valves therefor, a fuel, nozzle in said carbureter passage, a fuel supply reservoir 'with means for maintaining a substantially uni form fuel level in said nozzle, and with means for applying a higher pressure upon the fuel within the fuel reservoir while compressed air is being injected through the passage in the carburetor than during the 'period whenair is entering said carburetor passage at atmospheric pressure.

l0. In a carbureter having unfair passage, anatinosphe'rie inlet, a compressed an' inlet,

`valves therefor, a fuel nozzle in, said earbureter passage, a fuel supply reservoir with means for maintaining' a substantially nn`1- form fuel level 1n said nozzle, means for applying a higher pressure upon the fuel Within the fuelreseri'oir while (:oiii}il'essed air is beingr injected through the pnssuge in the carburetor than during the period when air is entering said lairhureter passage atI almospherle pressure, and with means for varying the degree of difference in said pressures. Y

.11. In a ourlnn'eler having un air passage, an atmospheric inlet, a unimpressed nir inlet, valves therefor, a fuel nozzle in said carbureter passaggi-z, a fuel supply reservoir with r means for maintaining a substantially uniform fuel level in said nozzle, means for applyinr a higher pressure upon the fuel within t le fuel reservoir while compressed air is being injected through the passage in inlet passage. HERMAN DOCK.

Witnesses:

Y E. J, Janen,

VM. H. RUM', 

